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Network analysis method, information processing device, and storage medium

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Network analysis method, information processing device, and storage medium


A network analysis method using an information processing device includes receiving packets from a wired network; extracting, from a set of the received packets, a delay packet that was received after at least a predetermined period of time had elapsed since an immediately preceding packet was received; and determining that a packet delay because of a control signal wirelessly sent from an access point coupled to the wired network has occurred, based on periodicity of a timing at which the delay packet was received.
Related Terms: Access Point Lapse Wireless Processing Device

USPTO Applicaton #: #20130329585 - Class: 370252 (USPTO) - 12/12/13 - Class 370 
Multiplex Communications > Diagnostic Testing (other Than Synchronization) >Determination Of Communication Parameters

Inventors: Sumiyo Okada

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The Patent Description & Claims data below is from USPTO Patent Application 20130329585, Network analysis method, information processing device, and storage medium.

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CROSS-REFERENCE TO RELATED APPLICATION

This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2012-128815, filed on Jun. 6, 2012, the entire contents of which are incorporated herein by reference.

FIELD

The embodiments discussed herein are related to a network analysis method, an information processing device, and a storage medium.

BACKGROUND

Currently, wireless communication systems such as wireless local area networks (LANs) are widely used. In many wireless communication systems, access points (sometimes referred to as “base stations” or “radio repeaters”) that perform wireless communication are coupled to wired networks that perform packet communication. Wireless communication devices such as mobile communication terminals wirelessly communicate with access points, so that the wireless communication devices are able to send packets through the access points to wired networks.

An access point sends (for example broadcasts) a control signal in such a way as to allow a wireless communication device to establish a connection to the access point or maintain the connection. Some control signals are periodically sent. For example, in a wireless LAN, an access point sends control signals called beacons at predetermined beacon intervals (for example, at 102.4 millisecond intervals). In this case, a wireless communication device periodically receives some or all of the control signals sent by the access point. If wireless communication between an access point and a wireless communication device is half-duplex communication, the wireless communication device will stop sending packets while receiving a control signal from the access point. Parameters for a control signal, such as the amount of data, transmission rate, and transmission period of a control signal, are sometimes able to be set for each access point.

A wireless LAN system in which a proxy server sends a probe packet to a wireless LAN device, measures a response time until a response to the probe packet returns, and estimates the beacon interval of a wireless LAN base station has been disclosed. Japanese Laid-open Patent Publication No. 2007-151121 discloses an example of the related art.

SUMMARY

According to an aspect of the invention, a network analysis method using an information processing device includes receiving packets from a wired network; extracting, from a set of the received packets, a delay packet that was received after at least a predetermined period of time had elapsed since an immediately preceding packet was received; and determining that a packet delay because of a control signal wirelessly sent from an access point coupled to the wired network has occurred, based on periodicity of a timing at which the delay packet was received.

The object and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the claims.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, as claimed.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 illustrates an example of a wireless communication system of a first embodiment;

FIG. 2 illustrates an example of a wireless communication system of a second embodiment;

FIG. 3 is a block diagram illustrating an example of hardware of a monitoring device;

FIG. 4A and FIG. 4B illustrate examples of timings at which packets are sent;

FIG. 5 is a graph illustrating an example of the relationship between the packet reception interval and the beacon delay packet;

FIG. 6 illustrates an example of a format of a packet;

FIG. 7 is a block diagram illustrating an example of a function of the monitoring device;

FIG. 8 is a flowchart illustrating an example of a procedure of delay analysis;



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Industry Class:
Multiplex communications
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stats Patent Info
Application #
US 20130329585 A1
Publish Date
12/12/2013
Document #
13895580
File Date
05/16/2013
USPTO Class
370252
Other USPTO Classes
International Class
04W24/00
Drawings
16


Access Point
Lapse
Wireless
Processing Device


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